Smart Motorway gantry sign
A gantry structure spanning the motorway with electronic signals, blue signs showing an exit and the following text.
Exit destinations: A243 Leatherhead; Dorking (A24) .
Forward destinations: Gatwick [Airport symbol] Dartford & (M20); Reigate M25 .
Junction number: 9.
This junction is spread out over a couple of miles. The sliproads serving the anticlockwise carriageway are here, but there's then a long curving dual carriageway running under and parallel to the M25 that links to the sliproads for the clockwise side, which we'll pass in another mile or so.